Feed device



lvlralyy 24, 1932. H, HUBER 1,860,033

FEED DEVICE i Filed Aug. 2. 1930 4 Sheets-Sheet 1 4 Sheets-Sheet 2 H. HUBER FEED DEVICE Filed Aug. 2, 1930 May 24, 1932.

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May 24, 1932. H. HUBER g 1,860,033

FEED DEVICE Filed Aug. 2, 1930 f 4 sheets-sheet :5

May 24, 1932. H, 'HUBER 1,860,033

FEED DEVICE Filed Aug. 2, 1950 4 Sheets-Sheet 4 @y @Eff Juve/zia@ Patented May 24, 1932 f Wren stares;

HANS HUBER, or ZURICH, SWITZERLAND, Assieiron morini/ f 1a. r. A. G. PATEivrvniiY WERTUNGS- & FINANZIERUNGS-AKTIENGESELLSCHAFT, ZURC-I, SVJ'ITZERLAND FEED `nnvicis f Appiication mea August a, iseaseriai No. 472,708, and iii switzeriana mig-11st 31, 192e.

` This invention relates to improvements in.

feed devices in machines for quantityv proi duction of articles fromV bar-shaped stock material, such as wooden spools. The numworked which is inserted withV clearance in the hollowV vertical machine spindle and the,

w inner circumference thereof, due to theY action of residual centrifugal force moving the bar .in close contact with this circumference. Thus automatic feed motion oftheV bar by Y gravitation at this high speed beingv impeded 3 5 it is necessary to provide a feed device forV counteracting this fiictional resistance andk the supply'means of the feed device without o driven bar of between L1500 and 6000 revolucircumferential movement is turned about its axis, at the moment it hits with its front face,

the end face of the lower bar,[by frictional engagement between these two faces whichvis full rotational speed of the lower. power tions perminute. The upper bar thus rotatcapable of following the lower bar in its downward movement, with the abutting end, faces remaining in frictional engagement, by gravitation alone, its residual centrifugal force not being suiicient to counteractthis movementdue to frictional engagement be-V tween it and the wall of the bore of the Vhollow working spindle when thisbar is moved one-sidedly through vthe clearance space be,- tween it andy said bore and before this bar is chucked and itsl circumferential speed increased to the high value after the. lower bar has been used up. Q l l v o The object of the present-,invention is tol provide suitable feed means for this vpurpose and according to thev invention` in vthe `feed device a clamping appliance formoving the bar inthe one direct-ion of movement a recip-v V e rocating saddle is provided on said clamping appliance being actuated byV theV displace-j ber of revolutions of machines of this lrind,4 Ynecessarily requiring to be very high, con# siderable friction arises between the bar to bev f proportionate to the weight of the upper bar, so that the latter'has not imparted to it the" ing at a speed of onlyV say 1000 revolutions is,

ment of a carriage relatively to thelsa'ddle,

the said carriage `being"` axially.. shiftably" .mounted with respect tothe latter.

'Y In thej accompanying drawi gs an.eiiibfodiy ment of the invention is illustrated by way of example only, Vwherein F ig. 2 a sidejelevatiofn' of 1i;

asmaller scale;

Fig. 4 is a section on theliiielY-IV in I 141g. 1, showing thefescapement,mechanism;

' Fig. 5 isf a fragm-entarylsection on theline V-V 'in Fig."` 1 showing the lockingmeans for'thesaddle;` Y y i Y Figgshows a top planview of the saddle, o

with 'a'. section through one of the engage- 1 ..jj 4

Y 'ze Y Fig,'7 is a section onthe line VII--HVIIo-in ment rollers ofthe-clamping device;

Fig. 1; Fig. 8 is a front elevation of a machine for `cpiaiitity productionfof"wooden spools with l y the'feed device according to the invention ap# pliedtheret o,and o Fig.9is'asideelevation'to Fig, 8. f

1 is an axial section ofa.y feeddevice; N Figs. lcian'd lare similarviews to Fig. 1 i e with certain parts in different positions; 1

ln vthe fram-e 1,'-a hollow saddle 2 is verfl tically 'reciprocatorily arrangedk on which a carriage 17 is mountedtobe,axiallyshifte able relatively thereto.. The'carriage carries' ajroller ww'hichcooperates witha` curved guideway l on a `cam body 5 securedtothe' control shaft 6. VVJhen' the shaft 6 isturned the carriage andithereby the saddle 211s moved upwardly by means of the cam' body against the action of springs 7 .which 'are arranged 'onguide bars 8 for the-saddle'J 2 between '-thejlatter and the upper zwall of' p teli-e frame 1. `The springs? `tend to move the saddle 2f'and'the Vcarriage 17'jin contact with' the guide-'way tonthe body 15. The `carriage 17, and indirectly thel saddle 2=w-ith it, in'V their lowerf end positionrest, against a rubber buffer 10whichis removablycon`r nected to thecaijriafge, 17'oppcsiteanabut'-v m'ent member 12fmounted onjsprings 11` which vare carried on supports V9 adjustably f arranged onthe bars, The buffer 1104and j. i i the springs 11 counteract-the blow exerted 2?' on them bythe saddle 2, forced downwardly by the `action of the springs 7 by cushioning it.

Between the saddle 2 and the carriage 17 ia compression spring 18 is Yinserted which tends to press these parts apart.

The .saddle is provided with a bore 2b through which the bar 20 to be worked is passed and at the same time guided thereby. In order to-secure and center the bar 2O in the saddle 2 three slides 21 are provided e which enter in radial guides of the saddle to be easily displaceable therein and each of which is provided with a roller 22 for `engaging the bar 20'and mounted on a ball e bearing. For moving the slides 21 radially,

Y of the carriage 17 so that when the latter is axially shifted relatively tothe saddle 2 the slide 21 is radially. displaced and thereby the guideroll-er Vassociated therewith. is brought to bear on the work blank 2O or moved away from it respectively. Besides, on the saddle 2 a hook 28 is secured.

When ,theV carriage 17 and thereby the saddle 2 is moved upwardly bymeans of the guideway 4 against the action of springs 7 (Fig. 1) the hook 28 grips behind a radially `displaceable bolt 29 which is displaceably mounted in the upper part of the frame 1.

l For the displacement of this bolt a cam disk 30 carrying a stud 31 (Fig. 5) is provided on the control shaft 6.. The said stud on Vthe rotation of the? shaft 6 engages with the o ne arm of a two-armed lever '33, which is v mountedv on a pivot 32 ofthe frame 1 and the other Yarm of which cooperates Vwith the V.bolt 29 to'pull the latter radially inwardlyy so as to release the hook 28 when the stud v31'hits the lever '33. Immediately after the ysaddle 2 is-secured by the bolt 29 the carriage 17 by action ofthe spring 18 which now K expands thus holding the carriage pressed against thecam body 5,'during the downward movement of the same, causes the rollers 22 onthesaddle 2 to firmly clamp the bar 20 by rolling f rictional engagement arisingbetween the bar and the rollers, when they beginV to run onv their ball bearings (Fig. Y6). By rthe arrangement of these ball bearings that lossof rotational-'speed of the bar is due to the engagement between the bar and the rollers is reduced toa minimum.

Asy soon as the rollers 22 .have gripped thebar 20 the bolt 29 rreleases the hook 28,

whereafter the saddle 2 together withl Athe bar2O and the carria De'17 are vpushed down- V wardly by means of t e springs 7. Thus the saddle 2 and the carriage 17 are released by rotation of the control shaft. y The momentV the carriage 17 hits the abutment member12 by the removable buffer 10 the spring 18 is compressed by the weight of the saddle 2. i and the thrust caused by the released springs 7 whereby the clamping appliance is opened. Thus the saddle '2 hits indirectly7 on the buffer 10 by thel intermediary of the carriage 17, so that its kinetic energy is actually destroyedY by the elasticity of the buffer springs 11. g 1

To enable further'bars 2O to be fed by the device a drum-shaped supply rack lis provided having guide tubes 36 spaced at equal distances from the centre (Fig. 3) and each adapted to accommodate a bar 20. AThe supply rack 35 is disposed coaXially with the control shaft 6. The radial distance ofthe guide tubes 36 is such as to'allow one ofthe said tubes at a time to be adjusted coaXially with the bore 2t.- Thevfeed motion ofthe Aguide tubes`36 is automatically effected by the aidof an escapement'm'echanism including a ratchet wheel connected to the supply rack. 'A pawl 40 linked toa feed lever 41 cooperates with the teeth of the ratch- Ylever 45 against the action ofv revolution of the shaft 6 the supply rack 35 is advanced one feed step, whereby a` guide tube 36 is moved in alignment with the saddle 2 to allow a fresh bar to dropdown into the bore 2b of the latter.

that it is enabled to pass beyond the upper guide member 46 which is formed by an incision in the top ofthe frame 1 and centrally disposed ab'ove'the bore 2t of the sad/dle 2 for guiding the Work blanks 2O in alignment with said bore. In this manner the 1ever 41 is adapted to bear against the bar'20V which is `passinginto the bore 27) through the guide tube 36 which has been turned to register with the guide member 46, whereby the pau/140 is rendered inoperative its angular displacement being reduced thus preventing the pawl from gripping behind the next tooth on theiratchet Wheel.

Consequently, the rack 35 is at standstill and arrested inV this position byy a. spring y pressed stop tooth 44,r until, after the upper' endA of the bar 2OV having passed the llever 41,l the latterswings back vbyacti'on of the tensioned springl 42, whereupon the rack .is advanced a step byvthepawl-LO engaging The lever 41 projects radially vso far out behind the neXtvtooth `on the ratchet wheelv 39, andthe lever 45being correspondingly V.movedrby means of cam disk 80 softhat a fresh,l

Yeo

Work blank is caused to drop into the bore 2b. Y rIhe feed mechanism is adapted to be angularly shifted about the control shaft 6.

The Figs. 8 and 9 shovv how the feed device according to the invention may be applied to a machine 50 for quantity production of Wooden spools, having a motor driven hollow spindle 5l through which the Work blanks 20 are fed step by step to a lower Working chamber 52. -Behind 4this chamber in a separate compartment 53 Where the motor driven gearing 54 for the control shaft 6 is housed, the feeddevice being mounted ldi-` rectly above on the casing of the machine. Suitably the stop sleeveslQ and the cam body 5 are adjustably arranged, so as to enable the vertical feed step for the Work blanks to be varied. i

I claim: A i l. In a feed device for machines for quantity production of articles from barfshaped stock material, in combination, areciprocavr tory saddle, a clamping appliance provided on the said saddle for. feeding the barin the one direction of movement of thesaddle, a locking member radially displaceable relatively to the said saddle for securing'thelat-l ter in the one of its "end positions, means for releasing the said locking member, a carriage axially displaceably mounted -on the said saddle for 4actuating the said clamping appli-A ance, means'for moving the said carriage and the said saddle apart` for closing theV said clamping appliance, and means for conveying the saddle together With the carriage'and the clamped bar into the other end position for advancing the bar one longitudinal feed step. y

2. In a feed device for machines for quantity production of articles from bar-shaped stock material, in combination, a vertically' reciprocatory saddle, a` clamping appliance provided on the said saddle for feeding the bar in the Vone direction of movement of the saddle, a spring loaded carriage axially displaceably mounted on the said saddle for actuating the said clam-ping appliance, a flange on the said carriage for the saddle to rest on, a cambody, means on the vsaid carriage cooperating With the said cam body,

for lifting the'said carriage and thesaid saddle bearing on its flange against spring action, and for lowering the said carriage assisted by elastic spring force, and means for actuating the said clamping appliance Y when the said carriage is shifting on the said saddle.

3. In a feed device for machines for quantity production of articles from bar-shaped stock material, in combination', a reciproca-` tory saddle, radially adjustable slideson the said saddle, a roller in each slide for'clampingly engaging With theV bar, a carriage, a bore inthe said carriage embracing the said saddle to adapt the said carriage to be axially aispiaceabiaon al Said Saddle, a Sloten the. said'f carriage for each' slide: obliquely dis-p posedto the axis of the said vbore,and a tvvo` i armed lever betvveeni'each of `the .said :carriageszengaging vwith itsone end in theV said slot; andfvvith its`otherend in the said slide vso as toshiftthe rollersonthe latter radiallyy n VWhen the carriage is: axially displaced relatively to the said saddle'. f'-

4. In afeed device for' machines for quan-V tity production of articles from` bar-shaped stock lmateriahin combination, af reciprocal y vtory. saddle, a vclamping appliance provided i onrthe said saddle for Vfeeding-the bar4 in the` one direction of movement Vofv the saddle, a locking. member radially displaceable rela-- ter in the one of its end positions,.a carriage f axially displaceably mounted :on they said saddley actuatingA Ameans between, the said [tively tothe said saddle for securing the lati j clamping appliance and the said saddle,a

control shaft for driving thesaid saddle, the said carriage,vand the said locking member, and means f-or actuating the said clamp- Y ing appliance` `when the said carriage is shift-ing on the said saddle. 5'. In a feed device for machines for quantity production of articlesA from bar-shaped stock material, in combination, a vertically reciprocatory saddle," a clamping appliancev providedjon the saidsaddle for feeding the bar in they one direction" of movement of the tively to the said saddle, resilient stop means on the machineframe fordamping the bloW exerted'on the latter by thedow'nwardly'mow s ing carriage, and means for opening the said saddle, ay carriage axially displaceable -relaclamping appliance Whenl the said carriage e is hitting the-said stop means.

6. In a feed device for machines for quantity production of articles from bar-shaped Y stock material, in combination, a reciproca- `tory saddle, a bore in the said saddle,fa

clamping appliance provided on the said saddle for feeding the bar in-the one direction of movement ofV the saddle, a carriage axial-V ly displaceable relativelyto the said saddle,

iio

a, druimshaped supply rack forthe stock i mater1al,an` escapement mechanism, means for rendering the said mechanism inoperative as long asY sufficient stock material is present 1n the said bore, and means for actu# ating the said clamping appliance when the said carriage is shiftingy on the said, saddle. f

izo

'stock material, an escapement mechanism, a

paWl, a feed lever in the l,said es'capementA L emmemechanism carrying the said pawl and pro# jecting lin tliepath of the stock material pass ing'through the said bore so that each bar` coinciding with the Vsaid lever rendersv the stock material', in combination, a reciprocatoryV saddle,VA radially movable slides on saidk lever andftherebytlie pavvl inoperative, and means for actuating thelsaid clamping appliance when the said carriage is shiftingV on the said saddle. f n

8. In a feed device for machines for quantity production of articles `from bar-shaped saddle, a roller mounted on each slide'and Vadapted to rotate onsaid saddle in unison with the stool; when engaging the same by rollingffrictional Contact,y a carriageV axially Ydisplaceable relatively to said saddle, and

means provided between 4said carriage and saidslides for moving the latter to grip the stock-between said' rollers under maintenance of the rotational speed imparted'to the stock by the machine.

In testimony Vwhereof I havesigned myV name to fthis specification.

HANS i HUBER.

CPI 

